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PCE
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DIFF Subgroup
H04L 15/24

Apparatus or circuits at the receiving end

Introduced: September 1968

Full Title

Full titles differ between systems:

IPC:

Apparatus or local circuits for transmitting or receiving dot-and-dash codes, e.g. Morse code > Apparatus or circuits at the receiving end

CPC:

Apparatus or local circuits for transmitting or receiving dot-and-dash codes, e.g. Morse code (teaching apparatus therefor G09B; telegraph tapping keys H01H21/86) > Apparatus or circuits at the receiving end

IPC and CPC are identically structured here. All 3 subcodes exist in both systems.

Child Classifications

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  • H04L 15/26 operating only on reception of predetermined code signals, e.g. distress signals, party-line call signals IPC+CPC Available in IPC and CPC
  • H04L 15/34 Apparatus for recording received coded signals after translation, e.g. as type-characters IPC+CPC Available in IPC and CPC